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Overclocking my XFX 6870

post #1 of 7
Thread Starter 
Hey all!

I have a AMD Radeon HD 6870 from XFX with dual fan and 3x direct copper heatpipes. And I was wondering if anyone here has any experience with overclocking it. If so, then till how many MHz did you OC the core clock and/or the memory clock without messing with the voltage, because I'd rather not do that. If not, then you can mabye help me by giving me some tips and/or recommending some good software to overclock my GPU. I was thinking about OCing my GPU with AMD Overdrive or MSI Afterburner, do you guys prefer any of these or are they equal to eachother? Also what software can I use to do a stresstest on my GPU? I heared FurMark was a good program for it. Also what would be a safe temperature to stop with OCing? I heared you shouldn't go above 90 degrees, even 85 degrees if you want to be on the safe side. I hope you guys want to share your experience with me and give me some hints! thumb.gif

Greetings,

G3ronimo
Edited by G3ronimo - 7/4/13 at 4:49am
post #2 of 7
Thread Starter 
My mobo is a ASRock 970 Extreme4 and my CPU is a AMD Phenom II X4 965 BE. Thought that might be important information you should know.
post #3 of 7
No real "tips" or tricks when it comes to overclocking a GPU. I have a Powercolor 6870 (which is probably the worst partner for GPUs AMD has right now) and I have mine overclocked to 960 core and 1200 memory. This is all without any voltage or bios mods.

The way to OC is just to push a little and then check with a program like furmark. I use the AMD catalyst control center to change the GPU frequency.

Just make sure you have good ventilation in your case and don't push things too far to fast. I've seen 6870s go as high as 1050 core and 1320 on mem. (not to say that you'll get there.)
 
The backup
(15 items)
 
Notebook
(8 items)
 
CPUMotherboardGraphicsRAM
FX-6100 M4A89GTD PRO/USB3 Powercolor R9 270X PCS+ 8gb Kingston FuryX 1866mhz 
Hard DriveHard DriveOptical DriveCooling
OCZ 128gb Toshiba 3gb 7200rpm Samsung DVD Deepcool Frostwin R2.0 
OSMonitorKeyboardPower
Windows 8.1 64-bit PRO LG 24M35H-B Logitech K120 Corsair CX500 
CaseMouseAudio
Thermaltake Versa H15 Azio Levetron USB Asus Xonar DG 
CPUMotherboardGraphicsRAM
i5-4200u Haswell ULT NVidia GT 750m 12gb DDR3L 1600mhz 
Hard DriveOSMonitorAudio
32gb SSD + 1tb HDD Windows 10 64-bit 14" Glossy AHVA 1080p Touchscreen Realtek HD 
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The backup
(15 items)
 
Notebook
(8 items)
 
CPUMotherboardGraphicsRAM
FX-6100 M4A89GTD PRO/USB3 Powercolor R9 270X PCS+ 8gb Kingston FuryX 1866mhz 
Hard DriveHard DriveOptical DriveCooling
OCZ 128gb Toshiba 3gb 7200rpm Samsung DVD Deepcool Frostwin R2.0 
OSMonitorKeyboardPower
Windows 8.1 64-bit PRO LG 24M35H-B Logitech K120 Corsair CX500 
CaseMouseAudio
Thermaltake Versa H15 Azio Levetron USB Asus Xonar DG 
CPUMotherboardGraphicsRAM
i5-4200u Haswell ULT NVidia GT 750m 12gb DDR3L 1600mhz 
Hard DriveOSMonitorAudio
32gb SSD + 1tb HDD Windows 10 64-bit 14" Glossy AHVA 1080p Touchscreen Realtek HD 
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post #4 of 7
Thread Starter 
Ok, thanks a lot. I will just heighten up the values with AMD overdrive then and test them with FurMark. And I'll stop increasing the values when my temperature wants to go above 85 degrees. thumb.gif
post #5 of 7
Thread Starter 
What happens with the durability of my GPU by the way when I overclock it? And also how long should I let FurMark run?
Edited by G3ronimo - 7/4/13 at 3:34pm
post #6 of 7
As long as your temps are kept in check, then your GPU will be fine. I usually run furmark for half an hour and if I don't see any artifacts or experience any driver crashes, then I leave it as is.

I can't believe that your GPU gets that high. The Asus cooling solution is really good and shouldn't be getting that high. I have a single fan cooling solution and I barely ever break 75C. You may think about changing the thermal compound on the GPU.
 
The backup
(15 items)
 
Notebook
(8 items)
 
CPUMotherboardGraphicsRAM
FX-6100 M4A89GTD PRO/USB3 Powercolor R9 270X PCS+ 8gb Kingston FuryX 1866mhz 
Hard DriveHard DriveOptical DriveCooling
OCZ 128gb Toshiba 3gb 7200rpm Samsung DVD Deepcool Frostwin R2.0 
OSMonitorKeyboardPower
Windows 8.1 64-bit PRO LG 24M35H-B Logitech K120 Corsair CX500 
CaseMouseAudio
Thermaltake Versa H15 Azio Levetron USB Asus Xonar DG 
CPUMotherboardGraphicsRAM
i5-4200u Haswell ULT NVidia GT 750m 12gb DDR3L 1600mhz 
Hard DriveOSMonitorAudio
32gb SSD + 1tb HDD Windows 10 64-bit 14" Glossy AHVA 1080p Touchscreen Realtek HD 
  hide details  
Reply
 
The backup
(15 items)
 
Notebook
(8 items)
 
CPUMotherboardGraphicsRAM
FX-6100 M4A89GTD PRO/USB3 Powercolor R9 270X PCS+ 8gb Kingston FuryX 1866mhz 
Hard DriveHard DriveOptical DriveCooling
OCZ 128gb Toshiba 3gb 7200rpm Samsung DVD Deepcool Frostwin R2.0 
OSMonitorKeyboardPower
Windows 8.1 64-bit PRO LG 24M35H-B Logitech K120 Corsair CX500 
CaseMouseAudio
Thermaltake Versa H15 Azio Levetron USB Asus Xonar DG 
CPUMotherboardGraphicsRAM
i5-4200u Haswell ULT NVidia GT 750m 12gb DDR3L 1600mhz 
Hard DriveOSMonitorAudio
32gb SSD + 1tb HDD Windows 10 64-bit 14" Glossy AHVA 1080p Touchscreen Realtek HD 
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Reply
post #7 of 7
Thread Starter 
Thanks a lot for the information. I'll see what I can do with AMD Overdrive! biggrin.gif By the way, how big should I take the steps while incrementing the core and the memory?
Edited by G3ronimo - 7/5/13 at 9:43am
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